_wcmp_22
larger = (_wcmp_22(phl, rhl) > 0);
ret = (_wcmp_22(phl, rhl) > 0);
larger = (_wcmp_22(phl, rhl) > 0);
ret = _wcmp_22(phl, rhl) > 0;
while (carry || (_wcmp_22(r, t) >= 0)) {